Distributing mechanism for concrete-mixers.



E. H. UCHTENBERG. DISTRIBUTING MECHANISM run CONCRETE MIXERS.

-AP5LICATION FILED APR. 21. I914.

Patented May 30, 1916.

ERICK H. LICHTENIBERG, OF MILWAUKE MACHINE COMPANY,

PATENT OFFICE.

E, WISCONSIN, ASSIGNOR TO KOEHRING OF MILWAUKEE, WISCONSIN.

DISTRIBUTINGMECHANTSM FUR CONCRETE-MIXERS.

Original application filed October 21, 1912, Serial No.

- 1914. Serial To all whom it may concern Be it known that I, ERIoH H.LICHTEN- BERG, a citizen of the United States, residing t Milwaukee, inthe county of Milwaukee and State of Wisconsin, have invented certainnew and useful Improvements in Distributing Mechanism forConcreteWIixers, of which the following is a specification.

In United States Letters Patent 1,141,470, issued June 1, 1915, I havedescribed certain concrete distributing apparatus designed especiallyfor use in connection with concrete mixers and which is particularlyadvantageous for facilitating the laying of concrete in building roads,paving .streets, and for similar purposes.

This application is a division of the above identified application,being directed to a special form of the apparatus referred to as mg gear9.

embodied in said previous application.

In the drawings :Figure 1 is a side View partly broken away showing mydistributing apparatus as it is actually used in connection with aconcrete mixing machine, dotted lines illustrating the bucket in dumpingposition. Fig. 2 is a sectional view approximately on the line 2-2 ofFig. -1. Fig. 3 is a perspective view showing more clear y the openingand closing device for the bucket.

In the drawings 1 denotes the mixing drum of a mixing machine, thelatter ineluding a truck 2 having the upwardly extending framework 7which is only illus tratcd in part. Upon this framework 7 are mountedthe various parts of the distributing means comprising this invention,and the driving and control mechanisms for said means. The drum 1 has anannular gear ring 4 with which meshes a driving pinion 5 mounted on ashaft 6 which is supported in bearings formed on beams 8 that projectfrom the framework 7. The shaft 6 has a driving bevel gear 9. Supportedin bearings on suitable brackets 14 of the frame work 7 is a secondshaft 12 transverse to the shaft 6 and carrying clutch mechanismcontrolled by a lever :20. Said clutch mechanism is designed to causereverse driving of a. cable 22. from the shaft 6 and its driv- Since theparticular clutch mechanism or driving connections intermediate theshaft 6 and the cable 22 are Specification of Letters; Patent.

l a ten ted M ay 30, 1916.

727,017. Divided and this application filed April 21, No. 833,461.

fully set forth in my patent previously re ferred to and are no materialto the improvements hereinaft r described in detail, the same will notbe set forth at length other than to say that the cable 22 passes arounda drum 21 on the shaft 12 from which drum the cable passes upwardlyabout a drum 23 supported on the axis 24 at the upper portion of theframework 7. From the drum 23 the cable .22 passes downward beneath apulley hi on the bracket 41 which is rigidly attached to the inner endof a long boom 30. From :ocncc the cable extends longitudinally of theboom around a pulley 39 on the outer end of said boom, beneath the boomback toward the inner end of the latter, and upward between pulleys 37and 38 on the bracket all back to the drum 23. The boom 30 is preferablymounted to swing about a vertical axis carried by an oilstanding bracket28 on the framework 7, and a hand wheel 15 its shaft 33, and the toothedsegment 31. are instrumentalities utilized for turning the boom on itspivot or axis, the segment 31 engaging a Worm, not shown, on the shaft33. Any suitable means, however, may be employed for shifting the boomhorizontally Within the purview of the invention, and any meansequvalentto the cable 22 may obviously be use The boom 30 is n-efcrablyan I-beam and therefore has channels at its opposite sides. 'A carriage47 having supporting rollers 48 operating in the channels of the boom 30at opposite sides thereof, is thus mounted to move longitudinally of theboom 30 and certain peculiarly novel connections intermediate thecarriage 47 and the cable 22, are provided as will now be set forth.

The carriage 47 supports a bucket 50 arranged beneath the same andconnected thereto by hangers 49. A shaft 51 is mounted in suitablehearings on and transversely of the carriage 4?. The doors 50' of thebucket 50 are connected by cables 53' with curved links at whose upperends are secured pivotally to laterally extendingbosses 55 projectingfrom the free ends of crank arms 52'. The arms 52 are fixedly secured tothe shaft 51, one end of which carries the fixed trip arm on, the latterhaving a l movable with llm carriage in a path s rted by a tripping cam59. The arm 1 lever 20 will 56 is provided with an operating handle 57which handle might be grasped not only for opening and closing the doorsby proper manipulation, but also utilized as a convenient means forswinging the boom'30 horizontallyycin the event the mechanism com risingthe parts 34, 33 and 31 should be ispensed with. A tripping finger 85 isintegrally formed with the lower ends of the arms 52, and is bifurcatedto facilitate the connection see Fig. 2, of short links 86 which are m-,terposed in thelength of the cable 22 at the point where the cablepasses through the earria the links being virtually a continuation ofthe cable, for'all practical pur- Peace.

The dischar e of the mixture in the drum 1, into the hue et 50 iscontrolled by a lever 90 and the mixed material passes into the bucketthrough a chutfi 3 on the framework 7. Assuming now that under thecontrol of the lever 20 the cable 22 may be moved in reverse directions,it will be apparent that with the parts as arranged in the full linepositions in Fig. 1 a movement of the cause the lower bight of the cable22 to travel outward. The cable 22 is connected with the carriage 47through the medium of the parts 86, 85, 52' and 51, and therefore themovement of the cable will forcibly move the carriage i7 and the loadedbucket 50 toward theouter end of the boom 30 to its dumping position.The bucket is dumped under the control of the operator;'manipulating thelever 20 to cause a reversal of the move-neat of the cable 22. Suchaction in effect momentarily discontinues the movement of the cable 22while the carriage -17 and the bucket. continue to move a slightdistance, this relative movement of the cable and carriage causing theconnection 86 and the arms 52' previously disposed at the right sideofthe axis 51 as seen in Fig. 1, to be moved to-the left side of saidaxis as shown in the dotted lines in Fig. 1, whereby the arms and thelinks 54; move downwardva suilicient distance to permit the dciors 50.of the bucket to completclyopen. \Vhenthe doors 50 are in open positions(see dotted lines Fig. 1) the trip 3.111! 56 will have been moved so asto incline leftward in respect to-the axis 51. The movement of the arm56 as well as the arms 52 is limited by the provision of a stop 52" inthe form of a lug integral with the arms 52;, there being formed on thecarriage 47 a pin or equivalent member 52 adapted to engage the stop 52"for the purpose just referred to.

As above suggested, the reversal of the movement of the cable 22 iseffective to cause the dumping of the bucket 50 and practically as soonas the dumping takes place the continued movement of the cable 22 in atthe bifurcated portion,

the reversed direction mentioned causes the carriage and the bucket totravel toward the inner end of the boom m an obvious manner. As thecarriage approaches'the limit of its inward movement on the boom 30 theboss 58 of the arm 56 is engaged by the tripping or restoring cam 59which thereby rocks the shaft 51 andnormalizes the parts 52, 53' and50', the bucket 50 being then ready to receive another charge at thewill of the operator.

In so far as the general operation of the .machine as above described isconcerned,

the same is quite similar to the general principle of operation of mymachine as illustrated and claimed in the Letters Patent previouslyreferred to. However, the machine as claimed hereinafter is designed tooperate on what I believe to be a generally new principle of action inthe art, such operation, however, being less preferred than thathereinbefore set forth, owing to the not that the operator of themachine is required to be more skilful in respect particularly to thecontrolling of the closing of the bucket, than if the closing cam device59 is utilized wholly for effecting the automatic normalizing of thebucket. The principle of operation just mentioned resides in thepeculiar combinative action of the parts incident to the permanentconnection of the cable 22 with the pivoted member which com prises thearms 52', the finger 85 integral therewith, and the stop 52" alsointegral with said arms. It must be remembere that this pivoted memberis a trip means in the form of a bucket opening and closing device,generally speaking, owing to its cooperation with the doors of thebucket.

The manner of discharging the bucket has been previously described,being incident to the reversal or stopping of the cable 22 during theoutward movement of the carriage as the bucket reaches the dischargeposition, the action of the cable being to shift the parts 85 and 52'sufliciently to lower the links 54 and open the doors of the bucket. Nowit is possible to close the bucket without employing the coiiperation ofthe cam 59 with the boss 58 of the arm 56. Supposing the parts to be inthe dotted line positions shown in Fig. 1, it will be evident thatmovement of the lower bight of the cable 22 toward the mixing machinewill cause the carriage 47' and the bucket to move toward the drum 1likewise, as required preliminary to recharging. during the inwardmovement of the carriage 1 1" and the bucket 50, and approximately atsuch time as the carriage 47' reaches a position adjacent to the innerend of the boom, the operator by actuation of the clutch controllinglever 20 stops or momentarily reverses the cable 22 the momentum of thecarriage 47 and the bucket 50 will cause these parts to move slightlyand sufficiently 1s provided-a bucket zovdevice on the1carriageconnected with the be moved back and fort initially to discharge thecon-.

' what is claimed as 'newlis:

through sa I and-said connection including an element judgment of thesorted to when to exert an outward pull onthe parts 85 and 52" wherebyto throw the arms 52' over the dead center, and thus lift the doors totheirclosed positions in respect to the bucket. While as suggested abovethe employment of (the cable 22 as the sole means to open the bucket andclose the same, effectuated by causing reverse relative movements of thecable and carriage 47, is not ordinarily used in preference to thetripping action of the cam 59 acting on the arm 56 owing to therequirement of nicety of operator, still such opera tion is entirelydpracticable and may be re- I esired according to the conditions ofservice ofthe machine. 7 3 So far as I am advised the operation of artsas above contemplated wherein there closing and opening cable wherebythe carria e and'bucket may along the boom, and operable tents of thebucket incident to relative movement of the cable and carriage, andoperable subsequently b additional-t relative movement of the ca 1e andthe carriage to close the buc t, O restore it "to its normal condianelement directl tion, is broadly new. i

,Means suchas awinding. shaft and its actuating wheel 84 together withthe cable 79 passing about the-pulley -7 may be utilized for. raisingand lowerin the boom 30.. Anymeans e u'ival'ent to 1; ese means may beemployed, 'owever,

.. Having thus described In a d' ,ributing ,I naohine, nation 'oiaupport, acarriag e adapted to o impart correspondqtravel'alonsaidsupjporh'a cable operable h" b k ling movement? to t e carriage a uc-et su shaft orf t e imm n t h?" 1 sen er s ng me pqrtai b c r a e r-.Q. a i'a'ge, and'controlh cablefbr efiecting initialre ative movementof the sameinrespect to thecarriage to act causing said openingandclosingmember to an to close the relative movement, of the cable andcarriage,

and stop means coactin and opening 'member to imit its movementrelatively to the carnage.

'2. In a concrete distributing machine, the combination of a boom, acarriage, adapted to travel barkand forth on the boom, a bucketsupported by said carriage; dumpinn doors for said bucket. a rcversclyopc'rable cable associated with the boom to actuate the carriage, :1pivoted member mountalong said boom,

the invention,

the combi:

and opening means to actuate the same,

ens iswrm v s ng andyopenable may move "means for the" 1d connection toopn the bucket,

bucket on subsequent with the closing f ed on the carriage, a permanentconnection of the bucket to hold the latter in closed positions, anoperating connection between the cable and said pivoted member forimparting movement of the cable to the car riage and including meanswhich onpredetermined relative movements of the cable and carriageactuate the said pivoted mem her to open and close the bucket doors.

3. ,In a concrete distributing machine, the combination of a boom, acarriage and bucket supported thereby adapted to move dumping doors forthe bucket, an arm pivoted on the carriage and connected with the doorsof the bucket to open and close the latter and normally positioned so asto lock the doorsclosed, a tripping finger projecting fromsaid arm, a

doors closed to, a position wherein said doors are opened, and saidconnection including ehgagi finger to restore t m doors bl the hue et to1 closed position incident to operation of the cable.

4. In means of the class described, the

combination of a'supporga carriage adapted to travel'along said support,a cable ope :erable in reversedirections to impart a correspondingmovement to the carriage, a bucket supported b the carriage 'a-shaft'on'the'carna e, buo et closing and means on sai' haft;anda connectionintermediate saidficable and the bucketcclosing for shiftin the latter vand esta lishing' an operative connection intermediate the cable and thecarriage to positively; move the lat tefiibfick. and i iorthgsaidconnection comand pivotally it locks the bucket closed independentlyo'fthe action of the cable and attached to he cable the, length of the1atter, so as to be shifted by the'cable to operate said' shaft anddischa e the bucket. I

5. n means of the classdescribed, the combination of a boom, a carriageadapted to travel on said boom, a reversely operable driving cableassociated with the boom for moving the carriage in opposite directions,a bucket supported by the carriage, a rock shaft onrthe carriage, triparms extending from said shaft, dumping doors for the bucket, linksconnecting said trip arms with the dumping doors and arranged so thatwhen their point with connection of the trip said tri ping opening t asuitable point in" prising a member-connected with said shaft arms is atone side of the axis of said arm the doors are maintained closed, apermanent connection between the shaft and the cable movable relativelyto and independently of the movement of carriage to force said point ofconnection of the links and trip arms to the opposite side of the axisof said arms whereby to permit opening movement of the doors of thebucket, andv stop means to limit the movement. of the trip arms;

6. In means of the class described, the combination of a boom, acarriage adapted to travel back and forth on the boom, a bucketsupported by said carriage, dumping doors Tor, said bucket, 11; cablepositively movable in reverse directions associated with the boom toactuate the carriagey a pivoted member mounted on the; carriage apermanent connection betvvesn said pivoted member and the doorsi'oftlimbucket tn holdthe latter insldsed positions, a; per.- manentconnection;' tween thecable and said pivoted memlien-ffor impartlnmovement, 0f thecableto thcarriage an adaptedpmi-elttive movement of thecable and carriage to efiect positive movement of said pivoted member topermit opening of the ucket doors, a stop on thepivoted member,- 7

and, l'lj'cans onthe carriage to coactfvvith the thus limit certainmovement of said member hold tblatte'r locked in oossi independently rthe cable, and means incablc an carriage to of said member to: 01 mg.bination ofa-' support,

Y so

.7,,.In means of the "class described, the combination .of a boom, acarriage adapted to revel back and. forthcn the boom, a hoe ct suiported by said earring dum doors, or said-bucket, a rev y o ob e cableassociated with the boom to ac v ate the-carris a ivoted door closing'11-, memli di m dunted on the carria-pdg'f" entconnection between said,p a oted member and the doors of the bucket to positions clud apermanent connection 'betw e cableto the carrib e and ads ted onrelative movement of 1 ofthe bucket doors, and means for-restoring "saidpivotcd member to its doorclosing and oclnng' osition; A

' 8. Irra distributing machine, the com-- acarria' adaptcd to travelalong sai port, a-cs is positively operable in reverse ircctions toimpart cor resfipanding movement to the carria e, a be t supported bythe carnage, a s it member on said shaft, on adap .b d the bucket closedindependently 'of the cable, a connection intermediate and. cable andthe bucket closing and opening member by which the cable may'movecarriage,

vement or e and controlling means for the cable for effecting initialrelative movement of the same in respect to the carriage to act throughsaid connection'to'open the bucket, and said connection including anelement which on subsequent relative movement of the cable and carriagecauses said opening and closing member to close the bucket.

9. In a concrete distributing machine, the combination 'of a boom, acarriage adapted to travel back and forth on the boom, a bucketsupported by said carriage, dumping doors for said bucket, a reverselyoperable cable'associated with theboom to. actuate the carriage, apivoted member 30 mounted on the carriage and normally lockin the doorsclosed independently of the (in lo, a permanent connection between saidpivoted member and the doors of the bucket to'hold the latter in closedpositions,

'a permanent connection betweenthc cable I boom, a dumping bucket.supported by the a carriage, Io; bucketdumping and restoring membermounted onthe carria e, an'oper .ating' cable undo connection Jtweenthecable and the damping and restoring m'em her to move the carriage on,the'lrgdnras the cable is opera and;means to operate said cable forpositively tensioning the same prelimine'rily to cansecoaction of thesaid connection and the-dumping and e flring 106 member todumpthebucket', and to operate the cable. subsequently to causecoaction ofthe connection with said member 'whe'reby to 'rostore'the'bucket tocharging condition.

gen j' .11. In a concrete distributing -machino, 110' -the co 1e andiorimpartmg the movement of;

the combination of a adapted to travel sap cited by the re the boom, .acarriage along the boom,:a bucket came 1 and means,

.bucketgand to shift said connection in an- 12 to normal condition. 12'.In a machine for distribut' mixed. materials {or pavements, t eoomothen'way to eflect restoration of. the bucket biliatio'n with aboom, o f---a carriag ice able along the same a distributing bucketsustainedglay the carna dnmping and restoring mechanism on t e cerria ecoacting with the bucket to normally hols the latter in a changingcondition, an operating cable for moving the carriage back and forth onthe bbpm, a positive connection intermediate the cable and thesaiddumping and restoring mechanism whereby, movement of the carnage on theboom is controlled, and operable to effect dumpi of the bucket at willduring movement 0 the bucket and leaving said dumping and restoringmechag the bucket to its charging condition after 1 dumping operation. v

In testimon whereof I afiix my signature 20 n presence 0 two witnesses.

ERICH H. LICHTENBERG.

' Witnesses:

WM. LE F. COLEMAN, WM. J. Kommzmu.

Correcticns in Letters Patent No. 1,l85,416. I

BEST Helmets. CQPY able along the saint a distributing bucketsustainedgby the car 11a e, dumping and restorin mechanism on t ecarriage coacting with t e 'buckot '0 normally hold the latter in a charin condition, an o eratin cable g i P g for moving t e carriage back andforth on the bo m', a positive connection intermediate the cable and thesaid dumping and restoring mechanism whereby, movement of the carnage onthe boom is controlled, and operable to effect dumpin of the bucket atwill during movement 0 the bucket and leaving said dumping and restoringmechath Patel 1t Signed and sealed this gth'day-oflnly, A. 1)., 1916.

nism' in a, condition to be normalized, and means to operate said dumpinand restorsaid positive-operating connection to restore Qthebucket toits charging condition after.

a dumping operation. I

In testimony whereof I afiix my signature in presence of two witnesses.

ERICH H. LICHTENBERG;

Witnesses:

4 WM. LE F. COLEMAN,

WM. J. Kommme.

1916, m on the application of Erich H. Lichtenberg, of Milweuke, wisest,f0; an improvement in Distributing Mechanism for deflate-Minis? in theprinted specification requiring correction as follows: 2:,fline 95, 3;the word permanentinsert the words on? also flooting 'dpage 4, line 51claimf'IQ- strike out the word means',;. and thet the said Letters-Patent should with these corrections therein that the same may conformto the record of the w. H; our; Acting C'om'miatipnd of'PM.

ing mechanism by means ofv t e cable and It is hereby certified that inLetters Patent No. granted 530,-

It is hereby certified that in Letters Patent No 1,185,416, granted May0 1916, upon the applicatien of Erich H. Lichten-berg, of Milwaukee, for

en imprevement in Distributing Mechanism for Concrete-Minty" lippear inthe printed specification requiring-correction as follows: 2, line 95,efter the word permanent insert the Words 01241 also floatingflpage 4,line 51, claim 7, strike out the word means' and that the said LetterePatent should read with these corrections therein that the same mayconform to the record of the ease in-the Patent Office.

Signed and sealed this 25tliday ofJply, A. 1)., 1916.

[BELL] F. W. H. CLAY,

Acting Gom'miuiom? of Patenh. Cl. 21414.

